Update to gulp 5 (#8642)

* Update to gulp 5

* Run make frontend-tests during CI instead of gulp test

* Build with yarn build to make sure proper gulp version is picked

.github/workflows/ci.yml

@@ -164,7 +164,7 @@ jobs:
         run: psql -U postgres -h localhost -p 5432 -c 'CREATE DATABASE h_functests'
       - run: python -m pip install 'tox<4'
       - run: yarn install --immutable
-      - run: gulp build
+      - run: yarn build
       - run: tox -e functests
   Frontend:
     uses: ./.github/workflows/frontend.yml

.github/workflows/frontend.yml

@@ -18,4 +18,4 @@ jobs:
     - name: Lint
       run: make frontend-lint
     - name: Test
-      run: gulp test
+      run: make frontend-tests

package.json

@@ -21,11 +21,11 @@
     "autoprefixer": "^10.4.19",
     "bootstrap": "^4.6.2",
     "escape-html": "^1.0.3",
-    "gulp": "^4.0.0",
+    "gulp": "^5.0.0",
     "gulp-changed": "^5.0.2",
-    "gulp-cli": "^2.3.0",
+    "gulp-cli": "^3.0.0",
     "gulp-if": "^3.0.0",
-    "gulp-svgmin": "^4.0.1",
+    "gulp-svgmin": "^4.1.0",
     "jquery": "^3.7.1",
     "normalize.css": "^8.0.0",
     "popper.js": "^1.16.1",